Flat single bed knitting machine



April 6, 1948. B R

FLAT SINGLE BED KNITTING MACHINE Filed Dec. 20, 1946 Inventor Attorneys- Patented Apr. 6, 1948 oFFicE L SW-GLELBEP A H N Gustav Huber, Gleator, England, assignor, to,

pany o'f- Great B i ain;

Application December 20, 1946; Serial Nol 7L7g55r8: i V

' In Great Britain January. 6-, 1 916:

s C lain sl (Cl. 66%.11'7} This invention relates to improvements inflat V single bedknitting machines of thetype iused for knitting berets and; articles of similar shape formedof a number-of sections.

Such machines knit the articles in continuous length with a few rows of plain; knitting between the last section ofone articleand the first section of thenext, a separation thread being knitted into these rows to indicate the position for severing the articles. 1 v

Owing; to the shape of the articlesthe continuouslengthwis much shorter on one edge than theiother and this makes'it desirable that the articles? should be separated after one or a few articles: have been knitted, this separation being eifected by hand bytheoperativeg 'I 'heobject of -the-present invention isthe.pro vision of automatic means for separating or severing the articles as thelengthofpfabric is knitted.

According to the invention a carrier supportingia knife is arranged to be reciprocatedacross the material v below the front; edge of the-bed thereofat. the appropriate time1 in the cycle of the knitting operations to cause the knife to sever. the fabric; at the plain rows of knitting separating onearticle from the, next;.

invention. is illustrated in and will be described with reference-tothe-accompanying draw,- ings in whic hz.

Fig. 1- is a plan of the knife carrier also showing oneend of: the patterning mechanism, a portion 0t theneedle bed andthe cam box Fig. 2 isefront elevation of the kniie carrier;

Fig. 3t-is alsection on line 3-3 oi-Fig 1';

Fig. 4 is a frontelevation of the cam-box show;- ing means for connecting the knife carrier thereto; I

Fig. 5, is an end elevationlooking in the direc tiont'ofarrowA; Fig. 1 showing mechanism operated" from the patterning mechanism for-actuatiing the rneans for connecting the kniie carrier to, the earn box;

Fig, fi isga f-rontelevation of a bracket which controls the movement of t he knife holdervto bring theknife into the cuttingposition at the commencement of; the cutting stroke. I

The patterningp cylinder'A, cam box- B, needle bed,i.and;the 'sinkers c (shown in Fig. 3)- which control, the, threadto the needles which: are not shown,v are all oi usual construction. and operate in knownfma nner. i

A rectangularbar DyiS arranged in front'of and below the; needle bed (3 being supported in, suit; able brackets secured to the frame; of; the; ma;- chine. The knife carrier, Dtis slidablyv mounted KangoLWearLimited, cleatforilglng land' ag cont-Q on -the bar n so thatit can "be reciprocated. from v side, side o theJnachine m me of thesinkers e he; EEgiS; carriedlbya holder El pivoted at -don: th -carrierlDl,the. holder beingnormally held in, non-cutting positien, i. e. the position shown in, arid ini iull lines in Fig. 1 a a n t h rtessli e e h spring as by the i d e in he eaq wh m r t s forwardly from-then lcl r. ArnQgmEhonwhich is pivotally controlled. rnernber c with, an d=fae,eis afiixed totthe rectangular bar D, fetimee t' an d n e h of the tail} of; the pivoted. qatche, The knife E, the

cutting else-of ichlies-inla horizontalplanc, is arranged between two rotatably. mounted. hQIirzontal discs or rollers e which during thecu-tting stroke, when the, knife .E and knife holder El are the. position. shown in, dotted lines in. Fig. 1, presstorito theiiabricisothat theoportion of the iabricbetween them is held taut for the operation o fthe knifeo Theoppcsi-teend of the knife holder E ite that. on whieh,.the, ,knife,E is mountedji sfformegliwith. a. forwardly projecting member 6 adapted, toien'gage, an inclined face fan a Star:- tienary bracket, E. at. the. end of the bar D at w u in wa Thejknife oarrien D is, provided, with a rearwardlv, extending armed}; the, end of which em br aices'lt he rod Bion. which the cam box B, reciprnqates... A me-armed lever Z is mounted on the'arrn. dll southat it can Di ot in a horizontal plane, one end of the lever being, formed with ahookor, catchjdj andthe other. enold lying above a id na lit t a r tdt e d in itsinwerr- 9$ iQ1; 9 i l1. 1 9 in 1 by a s it nn pa dt I .IhecainfldggJ-Ig is formed withan undercut relc essob a ap tedto bele ngaged by, thehook or catch d loi helever} d when thelatteriis movedoabout amypial s rfli i e? is. $W$1 :0 1 and of the Shaft A lcfi the patterning cylind r A 8 that i rotates therevvith and'ta proieetion a with an inclined face is formed oneriepund tbthefiflripheryofthe isc A}. 'Ifhelrearlend,qi theslidingbolt o li es ingthelpath ofi thepl qifietion at whereby on eagle, reyolutignoi the; cylinder A and conseeuentlv oi' the disc A, ithe;1iear end of the. sliding belt a is; engaged-by, th incl ned face o the projection a and the bolt is moved forward agan ii i re se aqt theprin a The from o thekbolte i's inefineiasshown in Fig. I r N 'he end dtof the lever d? i e t en-itaea q w td brhez w ee ie jeh. thegcarrier- D}. is. located at the end of the machine the parts of the severing mechanism remain inactive being at one end of the machine and in the positions shown in the drawings (full lines in Fig. 1). When the rows of plain knitting between a completed article and the commencement of the next article being knitted are in the same horizontal plane as the knife E the inclined face of the projection a on the disc A rotatin with the patterning cylinder A engages the rear end of the bolt a and moves the latter forward causing its inclined face a to raise the end 61 of the pivoted leverd and bring the hook or catch (2 into engagement with the recess 2) in the cam boxB thereby connecting the knife carrier D to the cam box. Accordingly on the next traverse of the cam box B the knife carrier D will be moved with it across the front of the machine. The catch or hook 11 remains in engagement with the recess b in the cam box when the end d of the lever d moves out of contact with the bolt 11 as the spring d is sufficiently light not to overcome the pressure of the'face of the recess 6 on the catch or hook 11 until the cam box comes to rest at the opposite end of the machine.

When the knife carrier D has moved a short distance at the commencement of its travel the tail of the pivoted catch e engages the inclined face of the member e carried by the arm E whe'rebythe catch is moved out of engagement with the knife holder lil allowing the latter to be moved by the spring c into the position shown in dotted lines in Fig. l, in which position the knife Erwill engage and sever the article as the knife moves across the machine. As the knife carrier D reaches the end of its traverse the member e of the knife holder E engages the inclined face 1 of the bracket F whereby the holder is returned to its initial position and re-engaged by the catch e, the knife E being thus held in its non-cutting position i. e. the position shown in full lines in Fig. 1. r a

As the cam box B approaches the end of its travel thepressure between the recess b and the catch or hook d decreases until the pressure of the spring d is sufficient to move the lever d and raise the'hook out of the recesses thereby disconnecting the knife carrier D from the cam box B. On the return movement of the cam box B its end engages the arm d of the knife carrier D and pushes the latter back to its initial position where it remains until the bolt 0. is again actuated by the projection a on the disc A of the patterning mechanism.

When an automatic severing mechanism such as hereinbefore described is employed in a knitting machine of the type to which the invention relates it is not necessary to knit a separation thread into the rows of plain knitting.

I claim:

1. In a flat single bed knitting machine of the type referred to the combination with the bed and patterning mechanism of the machine of a carrier adapted to be reciprocated across the 4 machine below the front edge of the bed, a knife supported by said carrier and means controlled by the patterning mechanism for causing the reciprocating of the carrier at the appropriate time in the cycle of operations to cause the knife to engage and sever the fabric.

f 2. In a fiat'single bed kmtting'machine of the type referred to the combination-with the bed and patterning mechanism of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed, a knife holder pivotally mounted on said carrier so as to be capable of oscillation in a horizontal plane, a

.knife's upported by the knife holder, means controlled by the patterning mechanism for causing the reciprocating of the carrier at the appropriate time in the cycle of operations to cause the knife to engage and sever the fabric, and means for oscillating the knife holder at the commencement of the cutting stroke to bring the knife into its cutting position. g

3. In a flat single bed knitting machine of the type referred to the combination with the bed, patterning mechanism and cam box of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed, a knife holder pivotally mounted on said carrier so as to be capable of oscillation in a horizontal plane, a knife supported by the knife holder, a catch mounted on the carrier and operated by the patterning mechanism to connect the carrier to the cam box at the appropriate time in the cycle of operations when it is desired to sever the fabric whereby the carrier will be traversed across the machine and means for oscillating the knife holder at the commencement of the cutting stroke to bring the knife into its cutting position. I

4. In a flat single bed knitting machine of the type referred to the combination with the bed, patterning mechanism and cam box of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed a knife holder pivotally mounted on said carrier so as to be capable of oscillation in a horizontal plane, a knife supported 'by the knife holder, a sliding bolt operated by the patterning mechanism at the appropriate time in the cycle of operations when it is desired that the fabric should be severed, a catch pivotally mounted on the carrier operated by the movement of the sliding bolt to connect the carrier to the cam box, and means for oscillating the knife holder at the commencement of the cutting stroke to bring the knife into its cutting position.

5. In a flat single bed knitting machine of the type referered to the combination with the bed, patterning mechanism and cam box of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed, a knife holder pivotally mounted on said carrier so as to be capable of oscillation in a horizontal plane, a knife supported by the'knife holder, a disc driven by the patterning mechanism, a projection on said disc, a sliding bolt operated by the projection at the appropriate time in the cycle of operations when it is desired that the fabric should be severed, a catch pivotally mounted on the carrier operated by the movement of the sliding bolt to connect the the type referred to the combination with the bed, patterning mechanism and cam box of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed, a knife holder pivotally mounted on said carrier so as to be. capable of oscillation in a horizontal plane, a knife supported by the knife holder, a disc driven by the patterning mechanism, a projection on said disc, a sliding bolt operated by the projection at the appropriate time in the cycle of operations when it is desired that the fabric should be severed, a catch pivotally mounted on the carrier operated by the movement of the sliding bolt to connect the carrier to the cam box, a second catch normally retaining the knife holder in a position in which the knife is inoperative, a spring acting to move the knife holder to the knife into its cutting position and means for releasing the second catch at the commencement of the cutting stroke.

'2. In a flat single bed knitting machineof the type referred to the combination with the bed, patterning mechanism and cam box of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed, a knife holder pivotally mounted on said carrier so as to be capable of oscillation in a horizontal plane, a knife supported by the knife holder, a disc driven by the patterning mechanism, a projection on said disc, a sliding bolt operated by the projection at the appropriate time in the cycle of operations when it is desired that the fabric should be severed, a catch pivotally mounted on the carrier operated by the movement of the sliding bolt to connect the carrier to the cam box, a second catch normally retaining the knife holder in a position in which the knife is inoperative, a spring acting to move the knife holder to bring the knife into its cutting position, means for releasing the second catch at the commencement of the cutting stroke and means for returning the second catch to its operative position at the end of the cutting stroke.

8. In a fiat single bed knitting machine of the type referred to the combination with the bed, patterning mechanism and cam box of the machine of a carrier adapted to be reciprocated across the machine below the front edge of the bed, a knife holder pivotally mounted on said carrier so as to be capable of oscillation in a horizontal plane, a knife supported by the knife holder, two horizontal rollers between which the knife is mounted and which press on the fabric to maintain it taut during the reciprocation of the carrier, 2. disc driven by the patterning mechanism, a projection on said disc, a sliding bolt operated by the projection, at the appropriate time in the cycle of operations when it is desired that the fabric should be severed, a catch pivotally mounted on the carrier operated by the movement of the sliding bolt to connect the carrier to the cam box, a second catch normally retaining the knife holder in a position in which the knife is inoperative, a spring acting to move the knife holder to bring the knife into its cutting position, means for releasing the second catch at the commencement of the cutting stroke and means for returning the second catch to its operative position at the end of the cutting stroke.

- GUSTAV 

